331331042113 has 2 divisors, whose sum is σ = 331331042114. Its totient is φ = 331331042112.

The previous prime is 331331042101. The next prime is 331331042131. The reversal of 331331042113 is 311240133133.

Together with next prime (331331042131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283942976769 + 47388065344 = 532863^2 + 217688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331331042113 is a prime.

It is not a weakly prime, because it can be changed into another prime (331331042153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165665521056 + 165665521057.

It is an arithmetic number, because the mean of its divisors is an integer number (165665521057).

Almost surely, 2^331331042113 is an apocalyptic number.

It is an amenable number.

331331042113 is a deficient number, since it is larger than the sum of its proper divisors (1).

331331042113 is an equidigital number, since it uses as much as digits as its factorization.

331331042113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 331331042113 its reverse (311240133133), we get a palindrome (642571175246).

The spelling of 331331042113 in words is "three hundred thirty-one billion, three hundred thirty-one million, forty-two thousand, one hundred thirteen".